US20090107297A1 - Reaction arm for power-driven torque intensifier - Google Patents
Reaction arm for power-driven torque intensifier Download PDFInfo
- Publication number
- US20090107297A1 US20090107297A1 US11/926,376 US92637607A US2009107297A1 US 20090107297 A1 US20090107297 A1 US 20090107297A1 US 92637607 A US92637607 A US 92637607A US 2009107297 A1 US2009107297 A1 US 2009107297A1
- Authority
- US
- United States
- Prior art keywords
- torque
- reaction arm
- intensifier
- housing
- low
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 88
- 230000008878 coupling Effects 0.000 description 9
- 238000010168 coupling process Methods 0.000 description 9
- 238000005859 coupling reaction Methods 0.000 description 9
- 238000010276 construction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
- B25B23/147—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for electrically operated wrenches or screwdrivers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
- B25B21/008—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose with automatic change-over from high speed-low torque mode to low speed-high torque mode
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
- B25B21/004—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose of the ratchet type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/0078—Reaction arms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/001—Gearings, speed selectors, clutches or the like specially adapted for rotary tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/02—Construction of casings, bodies or handles
- B25F5/025—Construction of casings, bodies or handles with torque reaction bars for rotary tools
- B25F5/026—Construction of casings, bodies or handles with torque reaction bars for rotary tools in the form of an auxiliary handle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/02—Construction of casings, bodies or handles
- B25F5/025—Construction of casings, bodies or handles with torque reaction bars for rotary tools
- B25F5/028—Construction of casings, bodies or handles with torque reaction bars for rotary tools to be supported by a fixed object
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
- Retarders (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Manipulator (AREA)
- Portable Power Tools In General (AREA)
- Apparatus For Radiation Diagnosis (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
- Steering Control In Accordance With Driving Conditions (AREA)
- Power Steering Mechanism (AREA)
- Switches With Compound Operations (AREA)
- Mechanical Control Devices (AREA)
- Gear-Shifting Mechanisms (AREA)
- Braking Arrangements (AREA)
Abstract
Description
- The present invention relates to reaction arms for power-driven torque intensifiers, as well as to power-driven torque intensifiers provided with reaction arms.
- Power-driven torque intensifiers or torque multipliers are available to be used with two speeds, including one high speed to run down a nut on a bolt or the like or to run up the nut, and one low speed to apply a high torque to the nut in order to tighten or loosen the nut.
- The torque intensifiers require the use of reaction means to divert a reaction force generated during turning of the nut, to a stationary object. This brings along a problem that a run down speed needs to be limited to avoid that the reaction arm, that usually abuts against a nut adjacent to the nut to be tightened, is slammed against the nut at a high speed, which could cause an accident if the operator's fingers are in the way.
- The same problem arises when a torque intensifier is used in a way that the gear mechanism and the gear housing turn at a given speed in the same direction for run down and run up, and in opposite directions to tighten or loosen a nut, because while an abutment of reaction arm is necessary for the second-mentioned mode of operation, it is not desirable for the first-mentioned mode of operation, again to avoid accidents.
- Accordingly, it is an object of the present invention to provide a reaction arm for a power-driven torque intensifier, as well as a power-driven torque intensifier with a reaction arm, which avoid the above mentioned disadvantages of the prior art.
- In keeping with these objects and with others which will become apparent hereinafter, one feature of the present invention resides, briefly stated, in a reaction arm for a power-driven torque intensifier having a housing, torque intensifier means and switching means for switching the torque intensifier means between high speed/low torque and low speed/high torque, said reaction arm being configured for operating said switching means so that when said reaction arm is placed in a first position, the torque intensifier means is switched to high speed/low torque and the reaction arm is usable as a handle by an operator, and when said reaction arm is placed in a second position, the torque intensifier means is switched to low speed/high torque and said reaction arm can abut against a stationary object since the high torque can not be absorbed by the operator.
- Another feature of the present invention resides, briefly stated, in a power-driven torque intensifier with a reaction arm, comprising the power-driven torque intensifier having a housing, torque intensifier means and switching means for switching the torque intensifier means between high speed/low torque and low speed/high torque; and the reaction arm configured for operating said switching means so that when said reaction arm is placed in a first position, the torque intensifier means is switched to high speed/low torque and the reaction arm is usable as a handle by an operator, and when said reaction arm is placed in a second position the torque intensifier means is switched to low speed/high torque and said reaction arm can abut against a stationary object since the high torque can not be absorbed by the operator.
- When the reaction arm is designed in accordance with the present invention, then in one instance it can be used as a handle, while in another instance it can be used as a reaction arm to abut against one of adjacent stationary objects.
- The novel features which are considered as characteristic for the present invention are set forth in particular in the appended claims. The invention itself, however, both as to its construction and its method of operation, together with additional objects and advantages thereof, will be best understood from the following description of specific embodiments when read in connection with the accompanying drawings.
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FIG. 1 is a view showing a cross-section of a power-driven torque intensifier with a reaction arm in accordance with the present invention. - A power-driven torque intensifier shown in the drawings has a housing which is identified with
reference numeral 1 and is provided with ahandle 2. The torque intensifier has amotor 3, and a single stage gear multiplier 4, for example of a planetary type, which is driven by themotor 3 and has anoutput shaft 5. - A multi-stage planetary gear set is accommodated in the
housing 1 and includes, for example, a first stage and a second stage. The first stage includes asun gear 6 which internally engages with theoutput shaft 5 and is internally engageable with adrive shaft 7, for example by interengaging splines provided on an inner surface of thesun gear 6 and on outer surfaces of theoutput shaft 5 and thedrive shaft 7. On its output end thedrive shaft 7 has an engaging member formed, for example, as a square-shaped end portion 8. The first stage further has satellite gears 9, which are mounted onshafts 10 held in acarrier 11. The satellite gears 9 have outer surfaces provided with a plurality of teeth which are engaged with corresponding formations that are formed on the inner surface of thehousing 1, for example,internal teeth 12. - The second stage has a sun gear which is formed by a
part 15 of thecarrier 11 of the first stage, andplanetary gears 13. Theplanetary gears 13 are arranged onshafts 14, which are carried by acarrier 23, and engage with the inner surface of thehousing 1, in particular with theinternal teeth 12 of thehousing 1. - The torque intensifier is further provided with two couplings which are operative for switching the modes of operation, as will be explained herein below. They include a
first coupling 16 which is mounted on thedrive shaft 7 for joint rotation therewith, for example by interengaging splines. It is provided withengaging elements 17 formed, for example, as short rods, and with areceiving groove 18. The second coupling is formed by thesun gear 6 of the first stage of the multistage planetary gear set. - Switching means are further provided for switching the torque intensifier between the corresponding modes of operation and include a
switching element 19. The switchingelement 19 has anelongated rod 20, which has afirst projection 21 engaging in the receivinggroove 18 of thefirst coupling 16, and asecond projection 22 engaging in a receivinggroove 23 of the second coupling orsun gear 6. - A reaction arm in accordance with the present invention is identified with
reference numeral 31. It has apart 32 which is pivotally connected with a part of thehousing 1. The pivotal connection of thepart 32 of thereaction arm 31 can be carried out, for example, by apin 34 mounted on thehousing 1 and extending through anopening 35 in thereaction arm 31. The end part of thereaction arm 31 is pivotally connected with theswitching element 19 and in particular with itsrod 20, for example, by apin 36 mounted on therod 20 and extending through anopening 37 provided in thereaction arm 31. Anotherportion 38 of thereaction arm 31 extends at the opposite side of an axis A of turning of the reaction arm and is configured for holding by an operator or abutting against an adjacent object. - The reaction arm with the power-driven torque intensifier in accordance with the present invention operate in the following manner:
- In the position shown in the drawings the first coupling formed by the
sun gear 6 connects theoutput shaft 5 of the single stage multiplier 4, driven by themotor 3, with thedrive shaft 7 via the interengagement of the inner surface of thesun gear 6 with the outer surfaces of theshafts output end 8 of thedrive shaft 7 engages with a nut and the torque intensifier is switched on, themotor 3 turns thedrive shaft 7 through the single stage multiplier 4 and theshaft 5 with a high speed and a low torque to run the nut down or up for tightening or loosening, for example for running the nut down on a bolt in an initial stage in which the nut is located at a distance from an object in which the bolt is inserted, with a high speed and a low torque. - When now it is necessary to tighten the nut on the bolt, a high torque with a low speed must be applied to the nut. For this purpose the
reaction arm 31 is turned from the position shown in solid lines in the drawings to a position shown in broken lines. Theportion 32 of thereaction arm 31 is turned around the axis A in a clockwise direction and pushes therod 20 of theswitching element 19 to the right in the drawings. Therod 20 with itsprojection 22 displaces the coupling or thesun gear 6 to the right in the drawing, so that thesun gear 6 disengages from the rear end of thedrive shaft 7, while the outer teeth of thesun gear 6 engage with the outer teeth of the planetary gears 9 of the first stage of the multi-stage planetary gear set. At the same time theprojection 21 of therod 20 of theswitching element 19 displaces thesecond coupling 16 to the right so that itsprojections 17 engage in the corresponding recesses of thecarrier 23 of the second stage of the multi-stage planetary gear set. - When now the torque intensifier is turned on, the
motor 3 rotates theoutput shaft 5 through the single stage multiplier 4, and theoutput shaft 5 rotates thesun gear 6 of the first stage which, in turn, rotates the planetary gears 9 engaged with thehousing 1, so through that the planetary gears 9, the rotation is transmitted to thehousing 1 which rotates about an axis B. The rotation of thehousing 1 is transmitted to theplanetary gears 13 of the second stage, whose teeth are engaged with the inner surface of thehousing 1, and then through theshafts 14, thecarrier 23, theprojections 17, and thecoupling 16 to thedrive shaft 7, which in turn, rotates the nut engaged by itsoutput end 8. A gear ratio of the gears in the multi-stage planetary gear set is selected so that in this mode of operation thedrive shaft 7 is rotated with a lower speed and a higher torque than in the above mentioned first mode of operation. The nut is therefore tightened with the high torque at low speed. - The position of the
reaction arm 31 shown in solid lines in the drawings corresponds to the mode of operation in which the torque intensifier operates with a high speed and a low torque, while the position ofreaction arm 31 shown in broken lines corresponds to the mode of operation when the torque intensifier operates with a high torque at a low speed. - In the above mentioned first mentioned position the
reaction arm 31 extends substantially perpendicular to the axis B of the torque intensifier and thehousing 1, while in the second mentioned position thereaction arm 31 extends substantially in a direction of the axis B of the torque intensifier and thehousing 1. - In the position shown in the drawings with the reaction arm shown in solid lines, as mentioned herein above the torque intensifier operates with a high speed and a low torque, and an operator can hold the reaction arm, in particular its
portion 38, because of the low torque. When however the torque intensifier must operate with a high torque at a low speed to tighten the nut, the high torque can not be absorbed by an operator, and thereaction arm 31, in particular inportion 38, abuts against an adjacent stationary object, for example a nut which is adjacent to the nut to be tightened. - It will be understood that each of the elements described above, or two or more together, may also find a useful application in other types of methods and constructions differing from the type described above.
- While the invention has been illustrated and described as embodied in reaction arm for power-driven torque intensifier and low speed/high torque, it is not intended to be limited to the details shown, since various modifications and structural changes may be made without departing in any way from the spirit of the present invention.
- Without further analysis, the foregoing will so fully reveal the gist of the present invention that others can, be applying current knowledge, readily adapt it for various applications without omitting features that, from the standpoint of prior art, fairly constitute essential characteristics of the generic or specific aspects of this invention.
- What is claimed as new and desired to be protected by Letters Patent is set forth in the appended claims.
Claims (16)
Priority Applications (20)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/926,376 US7798038B2 (en) | 2007-10-29 | 2007-10-29 | Reaction arm for power-driven torque intensifier |
AU2008205435A AU2008205435B2 (en) | 2007-10-29 | 2008-08-14 | Reaction arm for power-driven torque intensifier |
TW097132017A TWI337922B (en) | 2007-10-29 | 2008-08-22 | Reaction arm for power-driven torque intensifier |
ITMI2008A001631A IT1392286B1 (en) | 2007-10-29 | 2008-09-12 | REACTION ARM FOR AN ELECTRIC TORQUE MULTIPLIER |
JP2008234211A JP4825985B2 (en) | 2007-10-29 | 2008-09-12 | Reaction arm for power drive torque booster |
SA8290590A SA08290590B1 (en) | 2007-10-29 | 2008-09-20 | Reaction arm for power-driven torque intensifier |
KR1020080094613A KR101118786B1 (en) | 2007-10-29 | 2008-09-26 | Reaction arm for power-driven torque intensifier |
EP08165378.4A EP2055436B1 (en) | 2007-10-29 | 2008-09-29 | Reaction arm for power-driven torque intensifier |
DE102008042436A DE102008042436B9 (en) | 2007-10-29 | 2008-09-29 | Reaction arm for power-driven torque amplifier |
DK08165378.4T DK2055436T3 (en) | 2007-10-29 | 2008-09-29 | Reaction arm for a current-driven torque amplifier |
PL386257A PL218541B1 (en) | 2007-10-29 | 2008-10-09 | Reaction arm of a device for reinforcement of torque with engine drive and device for reinforcement of torque with engine drive |
TR2008/07633A TR200807633A2 (en) | 2007-10-29 | 2008-10-10 | REACTION ARM FOR POWER-TORQUE INCREASERS |
CN2008101693717A CN101422898B (en) | 2007-10-29 | 2008-10-14 | Reaction arm for power-driven torque intensifier |
EA200801989A EA013787B1 (en) | 2007-10-29 | 2008-10-15 | Reaction arm for power-driven torque intensifier |
FR0857043A FR2922799B1 (en) | 2007-10-29 | 2008-10-16 | REACTION ARM FOR MOTORIZED TORQUE MULTIPLIER |
ZA2008/09107A ZA200809107B (en) | 2007-10-29 | 2008-10-23 | Reaction ARM for power-driven torque intensifier |
ES200803046A ES2371575B1 (en) | 2007-10-29 | 2008-10-27 | REACTION ARM FOR MOTORIZED MOTOR TORQUE AMPLIFIER. |
BRPI0804580-1A BRPI0804580B1 (en) | 2007-10-29 | 2008-10-28 | REACTION ARM FOR ELECTRIC TORQUE INTENSIFIER AND ELECTRIC TORQUE INTENSIFIER WITH THE REACTION ARM |
MX2008013848A MX2008013848A (en) | 2007-10-29 | 2008-10-28 | Reaction arm for power-driven torque intensifier. |
GB0819851A GB2454353B (en) | 2007-10-29 | 2008-10-29 | Reaction arm for power-driven torque intensifier |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/926,376 US7798038B2 (en) | 2007-10-29 | 2007-10-29 | Reaction arm for power-driven torque intensifier |
Publications (2)
Publication Number | Publication Date |
---|---|
US20090107297A1 true US20090107297A1 (en) | 2009-04-30 |
US7798038B2 US7798038B2 (en) | 2010-09-21 |
Family
ID=40134031
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/926,376 Active US7798038B2 (en) | 2007-10-29 | 2007-10-29 | Reaction arm for power-driven torque intensifier |
Country Status (20)
Country | Link |
---|---|
US (1) | US7798038B2 (en) |
EP (1) | EP2055436B1 (en) |
JP (1) | JP4825985B2 (en) |
KR (1) | KR101118786B1 (en) |
CN (1) | CN101422898B (en) |
AU (1) | AU2008205435B2 (en) |
BR (1) | BRPI0804580B1 (en) |
DE (1) | DE102008042436B9 (en) |
DK (1) | DK2055436T3 (en) |
EA (1) | EA013787B1 (en) |
ES (1) | ES2371575B1 (en) |
FR (1) | FR2922799B1 (en) |
GB (1) | GB2454353B (en) |
IT (1) | IT1392286B1 (en) |
MX (1) | MX2008013848A (en) |
PL (1) | PL218541B1 (en) |
SA (1) | SA08290590B1 (en) |
TR (1) | TR200807633A2 (en) |
TW (1) | TWI337922B (en) |
ZA (1) | ZA200809107B (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8042434B2 (en) | 2008-01-24 | 2011-10-25 | Junkers John K | Safety torque intensifying tool |
US20130161041A1 (en) * | 2010-02-09 | 2013-06-27 | Eric P. JUNKERS | Apparatus for tightening threaded fasteners |
US20150231772A1 (en) * | 2013-10-17 | 2015-08-20 | Torq Fusion LLC | Reaction Device for Reducing Stress on Torque Generating Tools |
US20220193883A1 (en) * | 2019-04-26 | 2022-06-23 | Atlas Copco Industrial Technique Ab | Handheld power tool |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2514564A1 (en) | 2011-04-19 | 2012-10-24 | Bülent Sentürk | Device for tightening or loosening a nut |
DE102011089673A1 (en) * | 2011-12-22 | 2013-06-27 | Robert Bosch Gmbh | Hand tool |
WO2017151991A1 (en) | 2016-03-02 | 2017-09-08 | HYTORC Division Unex Corporation | Threaded fastener with friction coefficient increasing treatments |
JP6416881B2 (en) | 2013-04-24 | 2018-10-31 | ハイトーク ディビジョン ユネックス コーポレイション | Device for tightening threaded fasteners |
PL3083146T3 (en) | 2013-12-17 | 2021-01-25 | HYTORC Division Unex Corporation | A reaction washer and its fastening socket. |
DE102015111570A1 (en) * | 2015-07-16 | 2017-01-19 | Jörg Hohmann | Screwdrivers |
WO2017147546A2 (en) | 2016-02-24 | 2017-08-31 | HYTORC Division Unex Corporation | Apparatus for tightening threaded fasteners |
CA3036211A1 (en) | 2016-08-08 | 2018-02-15 | HYTORC Division Unex Corporation | Apparatus for tightening threaded fasteners |
EP3589451B1 (en) | 2017-03-02 | 2022-07-20 | HYTORC Division UNEX Corporation | Threaded fastener with friction coefficient increasing treatments |
BR112021008510A2 (en) | 2018-11-01 | 2021-08-03 | HYTORC Division Unex Corporation | anti-loosening reaction washer |
JP6591649B1 (en) * | 2018-11-20 | 2019-10-16 | 日東工器株式会社 | Electric tool |
CN113474124A (en) | 2018-12-04 | 2021-10-01 | 凯特克分部尤尼克斯公司 | Device for tightening threaded fasteners |
WO2021183695A1 (en) | 2020-03-10 | 2021-09-16 | HYTORC Division Unex Corporation | Apparatus for tightening threaded fasteners |
SE2130369A1 (en) * | 2021-12-17 | 2023-06-18 | Atlas Copco Ind Technique Ab | Power tool and load-responsive power transmission for a power tool |
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SE427810B (en) | 1981-11-23 | 1983-05-09 | Atlas Copco Ab | TWO-ENGINE TOOL FOR TIGHTENING SCREW TAPE |
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JPH11114847A (en) * | 1997-10-07 | 1999-04-27 | Toshiba Corp | Thread fastening equipment |
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JP4063641B2 (en) * | 2002-11-07 | 2008-03-19 | 株式会社マキタ | Electric tool |
JP4484447B2 (en) * | 2003-04-24 | 2010-06-16 | 株式会社エスティック | Method and apparatus for controlling impact type screw fastening device |
DE102004003202B4 (en) * | 2004-01-22 | 2022-05-25 | Robert Bosch Gmbh | Handle with detection device |
US20050249564A1 (en) * | 2004-05-05 | 2005-11-10 | One World Technologies Limited | Auxiliary handle for a portable power tool |
RU2287428C1 (en) * | 2005-05-03 | 2006-11-20 | Закрытое Акционерное Общество "Энерпред" | Device for unscrewing face nut of wheel pair journal box |
JP2006346810A (en) * | 2005-06-16 | 2006-12-28 | Maeda Metal Industries Ltd | Bolt and nut fastening machine and screw tightening construction method |
ZA200703455B (en) * | 2006-04-28 | 2008-05-28 | Unex Corp | Power-driven torque intensifier |
-
2007
- 2007-10-29 US US11/926,376 patent/US7798038B2/en active Active
-
2008
- 2008-08-14 AU AU2008205435A patent/AU2008205435B2/en active Active
- 2008-08-22 TW TW097132017A patent/TWI337922B/en active
- 2008-09-12 JP JP2008234211A patent/JP4825985B2/en active Active
- 2008-09-12 IT ITMI2008A001631A patent/IT1392286B1/en active
- 2008-09-20 SA SA8290590A patent/SA08290590B1/en unknown
- 2008-09-26 KR KR1020080094613A patent/KR101118786B1/en active IP Right Grant
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US8042434B2 (en) | 2008-01-24 | 2011-10-25 | Junkers John K | Safety torque intensifying tool |
US20130161041A1 (en) * | 2010-02-09 | 2013-06-27 | Eric P. JUNKERS | Apparatus for tightening threaded fasteners |
KR101874505B1 (en) | 2010-02-09 | 2018-07-04 | 하이토크 디비젼 유넥스 코포레이션 | Apparatus for tightening threaded fasteners |
US20150231772A1 (en) * | 2013-10-17 | 2015-08-20 | Torq Fusion LLC | Reaction Device for Reducing Stress on Torque Generating Tools |
US10220496B2 (en) * | 2013-10-17 | 2019-03-05 | Torq Fusion LLC | Reaction device for reducing stress on torque generating tools |
US20220193883A1 (en) * | 2019-04-26 | 2022-06-23 | Atlas Copco Industrial Technique Ab | Handheld power tool |
US11938610B2 (en) * | 2019-04-26 | 2024-03-26 | Atlas Copco Industrial Technique Ab | Handheld power tool |
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